Boots – shoes – and leggings
Patent
1987-09-15
1989-06-13
Arnold, Bruce Y.
Boots, shoes, and leggings
364822, 382 31, 382 42, 382 43, G02B 2746, G06G 900, G06K 976, G06K 936
Patent
active
048386448
ABSTRACT:
A method for recognizing the presence of a particular target in a field of view which is target position, rotation, and intensity invariant includes the preparing of a target-specific invariant filter from a combination of all eigen-modes of a pattern of the particular target. Coherent radiation from the field of view is then imaged into an optical correlator in which the invariant filter is located. The invariant filter is rotated in the frequency plane of the optical correlator in order to produce a constant-amplitude rotational response in a correlation output plane when the particular target is present in the field of view. Any constant response is thus detected in the output
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Ochoa Ellen
Schils George F.
Sweeney Donald W.
Arnold Bruce Y.
Chafin James H.
Daniel Anne D.
Edmondson David J.
Moser William R.
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